76582604 ÷ 840 
The aim is to understand the frequency of 840 in 76582604.

Moving on to step 1:
If we divide 7 by 840, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 840

Moving on to step 2:
840 goes into 76 0 times with a remainder of 76.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 76 after subtracting 0 from 76.
Append the next digit (5) from the dividend to 76 and continue with: 765 / 840

Going ahead to step 3:
840 can be fit into 765 0 times, resulting in a remainder of 765.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 765, we end up with 765.
Append the next digit (8) from the dividend to 765 and continue with: 7658 / 840

Going ahead to step 4:
If we divide 7658 by 840, we get 9 and a remainder of 98.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 7560 from 7658, we get 98.
Fetch the next digit (2) from the dividend, attach it to 98 and continue: 982 / 840

Going ahead to step 5:
840 can be fit into 982 1 times, resulting in a remainder of 142.
The number 1 becomes the next digit in our result. 
Result so far: 91.0
If we take 840 away from 982, we end up with 142.
Append the next digit (6) from the dividend to 142 and continue with: 1426 / 840

Step 6:
If we divide 1426 by 840, we get 1 and a remainder of 586.
The number 1 becomes the next digit in our result. 
Result so far: 911.0
Subtracting 840 from 1426 leaves us with 586.
Include the next digit (0) from the dividend after 586, then repeat: 5860 / 840

Going ahead to step 7:
When dividing 5860 by 840, we get 6 with a remainder of 820.
Put 6 as the next digit of the answer. 
Result so far: 9116.0
Subtract 5040 from 5860 to get 820.
Grab the next digit (4) from the dividend, add it to 820, then carry on: 8204 / 840

Let's proceed to step 8:
The number 840 fits into 8204 9 times, leaving a remainder of 644.
Record the quotient 9 as the next digit in the result. 
Result so far: 91169.0
The remainder is 644 after subtracting 7560 from 8204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

Moving on to step 9:
6440 divided by 840 is 7 with a remainder of 560.
Put 7 as the next digit of the answer. 
Result so far: 91169.7
Subtract 5880 from 6440 to get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Going ahead to step 10:
When dividing 5600 by 840, we get 6 with a remainder of 560.
Use 6 as the next digit of our solution. 
Result so far: 91169.76
Subtract 5040 from 5600 to get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Let's proceed to step 11:
840 goes into 5600 6 times with a remainder of 560.
Record the quotient 6 as the next digit in the result. 
Result so far: 91169.766
Deduct 5040 from 5600 and we're left with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

After the division, we end up with 91169.766 and a remainder of 0.056.